Distraction from work.

So oral from under a desk when she isn't expecting it. Fucking from behind over the desk when being made to write a letter or do an essay. Being teased with vibrators during silent exams. Or even sexual punishment like wearing a chastity belt or a butt plug for doing something wrong.

I have a nerdy but mischevious girl who could work wonders for this and I've never got to play her out in either side. She's bi and a switch.